Echelon : পর্যায়; স্তর; ব্যূহ;
Related Words
echelon  echelons  excellent  excelling  See Words Also In
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Appropriate Prepositions
Bad at (অদক্ষ): He is not bad at English.
Complain about (কোনো বিষয়ে নালিশ করা): They complained about the mismanagement of the programme.
Hard of (কানে খাটো বা কম শোনা): Ratan is a hard of hearing.
Look after (দেখাশুনা): He looks after me.
Succeed in (সাফল্য লাভ করা): He succeeded in life.
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Idioms
Lion’s share (বড় মাপের অংশ): He took the lion’s share of the profit.
Lose heart (হতাশ হওয়া) — Do not lose heart in danger.
Maiden speech (প্রথম বক্তৃতা): His maiden speech fell flat on the audience.
Put the cart before the horse (to reverse the natural order of things-কোনো জিনিসের স্বাভাবিক ক্রমকে পাল্টে দেয়া) - The leader put the cart before the horse.
Slow coach (অলস): You cannot expect much from a slow coach.